Abstract: 558 cases of dermatitis from moulded peat were reported.All patients had taken previously moulded pear.The clinical manifestation mainly was acute dermatitis.Some cases showed gastro-iatestiaal disturbance.These troubles may be promptly cured after symptoniatic treatment.The culture of moulded pear gave growth of Alternaria Sp.,Penicillium Sp.,Fusarium solani,Mucor Sp,and Monotospo;a Sp.,Animal tests with mycotic toxin produced toxic reactions.The authors suggested some preventive approaches against recurreace.